Door construction for vaults and the like.



v H. RBALOUN. DOOR CONSTRUCTION FOR VAULTS AND THE LIKE. APPLIOATION FILED JAN. 5. 1914.

1,104,765. Patented July 28, 191

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abbomwla o H. F. BALOUIL' DOOR CONSTRUCTION FOR VAULTS AND THE LIKE.

APPLICATION PI LED JAN. 5; 1914.

1,- 1 04,765. Patented July 28, 1914,

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H.P.BALOUN. DOOR CONSTRUCTION -FOR VAULTS AND THE LIKE. APPLICATION lILflD JAN.5. 1914. 1, 104,765. Patented July 28, 1914.

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, SIM/DMZ 1612 2751101 III'L NORRIS PETERS 60.. PHOTO-LITHO. WASHINGION. D \.V

H. F. BALOUN.

DOOR CONSTRUCTION FOR VAULTS AND THE LIKE.

APPLIGATION FILED JAN. 5. 1914.

Patented July 28, 1914.

4 SHEETS-SHEET 4.

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' SHOT/e13 V THE NORRIS PETERS CO. PHOTO-L!THO.. WASHING TON. D. c.

UNITED STATES PATENT OFFICE.

HARRY F. BALOUN, or CLEVELAND, onro, assrenon or ONE-HALF T0 LANsronn F. SHERRY, oFcANToN, OHIO.

DOOR/CONSTRUCTION FOR VAULTS' AND LIKE.

Application filed. January 5 To all whom it may concern Be it known that I, HARRY F. BALOUN, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a new and use ful Door Construction for Vaults and the like, of which the following is a specification.

My invention relates to improvements in the construction of doors for vaults, safes and the like and while applicable to a large number of uses, is especially adapted for the circular burglar and fireproof doors of bank vaults.

The objects of the improvement are, to generallv improve the construction of such doors, to provide, in a vault, an outer, and inner, or double door construction without necessitating a vestibule of unreasonable proportions and expensive construction.

Further objects are, to add to the security against attack by explosives or mob violence, to do away with unnecessary compli cations and to insure positive and satisfactory operation, while being practically proof against accident and injurious misuse.

These objects, together with other objects readily apparent to those skilled in the art, may be attained by the construction illustrated in the accompanying drawings, although the invention may be embodied in other forms, the construction illustrated be ing chosen by way of example.

In the drawings Figure 1 is a front elevation of a vault door construction (including the casing and outer door) embodying my invention, showing the door closed. Fig. 2 is an elevation of the inner face of the inner door. Fig. 3 is an elevation of the inner face. of the outer door. Fig. iis a fragmentary sectional view through one of the bolts of the outer door, showing the same in full lines in the fully retracted position and in dotted lines in the neutral and fully extended positions. Fig. 5 is an elevation of the outer face of the inner door. Fig. 6 is a horizontal sectional view through the outer and inner doors, casing, and immediately adjacent portion of the vault, showing both outer and inner doors in locked position. Fig. 7 is a horizontal, sectional view, of the inner door, taken on the line 77 of Fig. 5. Fig. 8 is a horizontal, sectional view, through the outer door, taken on the line 88 of Fig. 3. Fig. 9 is a section, through Specification of Letters Patent.

Patented July 28, 1914.

, 1914. Serial No; 810,497.

the inner door,'taken on the line 9+9 of Fig. 5. Fig. 10 is asectional fragmentary view of one of the bolts of the outer door, the same being somewhat similar to Fig. 4;, but showing the bolt in the fully extended osition only. Fig. 11 is a fragmentary, secvault, which is provided with the metallic lining 2 connected with the jamb 3 constructed ofmetal, as may be desired, and of a thickness equal to the combined thicknesses of the outer door and inner door 5.

The jamb 3 provides a circular door open ing provided with the door receiving flats 6 and breaks 7, ofany desired numbercr form. It will be noted that the jamb 3 converges inwardly in the manner well known to those skilled in the art. Theouter and'inner doors 4 and 5, in their body portions may be constructed in any desired manner, the outer door being provided with peripheral flats andbreaks so as to closely fit the outer portion of the amb, while the inner door is similarly constructed and provided with similar peripheral flats and breaks, but is of smaller diameter so asto fit within the jamb 3 back of the outer door, the flats and breaks of the outer and inner doors being adapted to form a continuous convergent edge interfitting with the jamb.

Referring now moreparticularly to the outer door 4 it will be noted that the same is provided with a hinge 8, of well known construction, said hinge being adapted to carry both outer and inner doors, as willv hereinafter more fully appear. Said outer door is also provided with a compressor I upon the outer side of the outer door. From an inspection of Fig. 3 it will be noted that either of the locks 12 and 13 is capable of retracting the bar 16 by reason of the intermediate equalizing bar 17 which is pivotally connected at its respective ends to the locks 12 and 13 and intermediate its ends, at 18, is pivotally connected to the bar 16.

On the inner face of the outer door are arranged the concentric annular flanges 19 and 20, which flanges are spaced from each other and provided with twenty-four equally circumforentially spaced radial bolt apertures 21 and 22, respectively, in which are arranged the twenty-four radially slidable bolts 23. In the space between the flange 19 and flange 20 is arranged the flat, annularly slidable bolt operating ring 24, which lies closely adjacent the back face of the door 4 and between said face and the bolts 23 where they span the space between the flanges 19 and 20. Each bolt 23 is provided with a screw 25 extending transversely through said bolt from the near and provided at its forward end with the stud portion 26 on which is rotatably mounted the shouldered washer 27. Under each bolt 23 the ring 24 is provided with a diagonal or eccentric slot 28 in which the smaller portion of the washer 27 is slidably and rotatably arranged, the annular shoulder of said washer being arranged between the bolt 23 and ring 24, as clearly illustrated in Figs. 4 and 10. The arrangement of the slots 28 is such that annular movement of the ring 24 will cause simultaneous radial sliding movement of all the bolts 23, said bolts being projected or retracted in accordance with the direction of movement of the ring 24, as will be well understood. For the purpose of maintaining the ring 24 in proper position with reference to the various parts, the said ring should preferably be provided with concentric guiding slots 29 through which extend screws 30, which are tapped into the body of the door For the purpose of annularly moving the ring 24, the said ring is provided with the inwardly disposed rack teeth 31 which mesh with a pinion 32 on the shaft 33. The said shaft 33 extends forwardly through the outer door, in accordance with approved constructions in such cases, and on the front face of said door is provided with the pinion 34 with which the hand wheel 35 has operative connection. VJhen the ring 24 is free to move annularly, it is evident that rotation of the hand wheel 35 will produce rotation of the pinion 32 to accomplish such annular movement on the part of the ring 24, thus throwing the bolts 23 inwardly or outwardly, in accordance with the direction of rotation of the wheel 35. For the purpose of indicating the position of the bolts 23 the pointer 36 is provided, which, upon rotation of the hand wheel 35,1noves over a dial, as illustrated in Fig. 1, to indicate the closed or fully extended, neutral or intermediate and open or fully retracted positions of the bolts. It will be understood that the said indicator is an unessential refinement and its construction is not herein claimed and therefore not further described.

For the purpose of locking the ring 24 against annular movement the bar 16 is adapted to be moved outwardly into a notch in the ring 24 at 37. The bar 16 is shown in dotted lines in said notch in Fig. 3. The bar 16, it will be understood, is longitudinally slidable, being slidably mounted in an aperture 38 in the flange 20, as clearly illustrated in Fig. 8, and being otherwise held in position by the keeper 39. It should be noted that the length of each bolt 23 is such that when its outer end is retracted into line with the periphery of the door at the flange 19, the inner end of said bolt will not project inwardly beyond the inner face of the flange 20. In this position, indicated by the dotted lines 40 in Fig. 4, the bolt may be said to be in the neutral or intermediate position. It should also be noted that by operation of the ring 24 the bolts may be thrown into the fully extended position illustrated in full lines in Fig. 10 and in dotted lines at 41 in Fig. 4, in which position the bolts extend beyond the flange 19, their inner ends being drawn within the flange 20, and may also be moved to the fully retracted position illustrated in full lines in Fig. 4, in which position the inner ends of the bolts extend inwardly beyond the inner face of the flange 20. It will be understood that the jamb 3 is provided with bolt sockets or a groove adapted to receive the bolts 23 when in their fully projected position.

Referring now more particularly to the inner door 5 it should be noted that the same is provided, on its outer face, with the annular flange 42, which is concentric with and adapted to telescope within the flange 20 of the outer door. When the doors are in their closest connected relation, therefore, it will be noted that a space 43 is provided between the inner face of the outer door and the outer face of the inner door. The flange 42 is provided with bolt apertures 44 which register with the apertures 22 in the flange 20, so that when the doors 4 and 5 are in their closest relation, as illustrated in Fig. 6, the bolts 23, when caused to move to their fully retracted position, as illustrated in full lines in F ig. 4, will enter the apertures 44 and thus serve to lock the inner door to the outer door.

The inner door is provided, on its inner face, with concentric flanges 45 and 46 carrying the radially slidable bolts 47 operated by an automatic bolt actuating device controlled by a time lock of any well known construction, one of the well known constructions being illustrated in the drawings, but the details of such construction being not herein claimed. In accordance with usual practice the bolts 47 are shown as twentyfour in number and as locking against the blocks 48 on the inner face of the jamb 3. This bolt actuating device and time lock,'in accordance with common practice, are arranged wholly upon the inside of the inner door with no operative connection extending through said door. If desired the glass panel 49 may be provided for the purpose of inclosing the bolt work on the inner door.

From the foregoing description it will be understood that when the inner and outer doors are both boltedin locked position in pointer 36 indicates open in order to fully retract the bolts 23 so that their inner ends will enter the bolt apertures 44 in the flange 42 and thus connect the doors in a firm and substantial manner.

In order to prevent accidental disconnection of the two doors while the same are open, and swung out from the jamb. the safety bolt work on the front face of the inner door, as especially illustrated in Fig. 5, is provided. This bolt work consists of four interconnecting bolts'50 radially disposed and longitudinally slidably mounted in keepers 51 andthe flange 42. At their innerends the bolts are pivotally connected at 52 to connecting rods 53, the inner ends of which are pivotally connected to the disk 54 which is rotatably mounted on the stud bolt 55 tapped into the door 5 at its center. tion of the disk '54 about the bolt 55 the bolts 50 will be retracted or extended, in accordance with the direction of rotation of the said disk. It will be noted that the disk 54 is not a simple disk, but is provided with an annular recess 56 within which the inner ends of the rods 53 extend, the screw pins 57 extending across said recess where the said rods are connected. It should be noted that the bolts 50 extend through the flange 42 at substantially equi-distant points and between the bolt a ertures 44.

Slidably arranged in the flange 42 are also the two radially disposed safety bolts 58, to the inner ends of which, at 59. the connecting rods 60 are pivotally attached. The inner ends of said rods 60'are pivotally connected to the disk 54, preferably by the same screw pins 57 as are used for the pivotal It will be understood that by rota-' connection by the two opposite rods 53. The rods 60, it should be noted, do not extend into the recess 56,. but are arrangedon the front side of the disk 54, and a finishing plate 61, held in place by said bolt 55 and screw pins 57, serves to maintain the rods 60 in properposition and produce smooth operation of the same. It should be noted that the bolts 58 extendthrough the flange i relationand the said bolts 50 are thus extended into the recesses 63, the doors 4 and 5 will be firmly connected to each other. In the jamb 3'zare suitable bolt recesses to receive the safety bolts 58, when the same are extended. From an inspection of Fig. 5 it will be noted that when the bolts 50 are fully extended the bolts 58 will be fully retracted, and that,

uponTetracting the bolts 50, by rotation of the disk 54, the bolts 58 will be simultaneously extended, so that when the bolts 50 are fully retracted the bolts 58 will be fullyextended. When the bolts 58 are fully retracted their outer ends are drawn within the line of the periphery of the door 5. so that the door may be closed into the jamb 5.

The edge of the disk 54 is provided with the rack portion and, forthe purpose of rotating the disk 54, a pinion 66. mounted on a rotatable spindle 67 extending through the outer door 4, is provided. The spindle 67 may be journaled in the door 4 in any approved manner and provided with such safety devices, collars, ofisets, and other protections as may be desired. The outer end of the spindle is preferably squared as at68 for the reception of a key or crank provided with a corresponding socket. To permit of the. separation of the outer from the inner door, when desired. the teeth of the pinion 66 should be slightly beveled or tapered at the inner end, as shown at 69, and the said pinion should be so disposed that when the doors are in their closest relation the said pinion will accurately. mesh with the teeth of the rack portion 65 of the disk 54. When the doors are in their closed relation, therefore, it will be understood that by rotation of the spindle 67 the bolts 50 and 58 may be actuated as desired.

In the side of the disk 54 opposite the rack portion 65 is the notch 70 into which when in its mostinward position. That portion of the bolt7l whichextends through the keeper 73 is preferably rounded, and on such rounded portion is arranged the coiled spring 74, which bears against the keeper 78 and the shoulder 75 of the bolt 71 and normally tends to urge said bolt to its innermost position so as to enter the notch 7 O. Pivotally connected at 7 6, to the bolt 71, is a lever 77, which is pivotally connected, at 78, to the door 5 and at its outer end, at 79, is pivotally connected to the inner end of the sliding rod which rod slidably' extends through the keeper 73, flange 42 and keeper 81. It will be noted that the flanges l9 and 20 are also provided with recesses 82 to provide for the reception of said rod. It will beevident that when the rod 80 is slidingly movedto its inner position, illustrated in Fig. 5, the lever 77' will fulcrum on the pivotal point 78 and move the bolt 71 outwardly, disengaging its inner end from the disk 54. By reason of the constant tendency of the spring 74, however, the'bolt 71 will normally tend to move to its inner position, thus moving the rod 80 outwardly. The rod 80 isof such length that when it is moved to its innermost extent, as illustrated in Fig. 5, the outer end of said rod 80 will be in line with the periphery of the door 5. It will thus be evident that when the door is closed into the amb 3, the outer end of the rod 80 bearing against said jamb will cause the said rod to move to the inner position illustrated in Fig. 5, thus the bolt 71 will normally engage the disk 54 when the door 5 is open and out of the jamb 3, but will be retracted from the disk eat-when the door is closed into said jam. The purpose of such arrangement is to prevent rotation of the disk 5% to disengage the interconnecting bolts 50 from the flange 20 when the door is swung out of the jamb. The description of the operation of the device hereinafter given will make this purpose more clear.

To prevent accidental or untimely rota tion of the spindle 67, its outer end is'incased in a housing 83'which is firmly connected, in any desired manner, to the outer face of the door 4. The front wall of said housing is provided with an aperture 84 which is guarded by a sliding door 85 operated by a combination lock 86, the dial of which, on the front of the housing 88, is indicated by the numeral 87. It will thus be evident that in order to apply a key or crank to the spindle 67 it will. be necessary to know the combination of the lock 86 and operate said lock to actuate the door 85. v

F or the purpose of producing exact register of inner and outer doors when brought to their closest relation, the tapered studs 88 are provided, which studs are connected to the flange 20 and extend inwardly from the inner face thereof. In the outer face of i the inner door are arranged the sockets 89 which are correspondingly tapered to receive said studs and draw the doors to exact relative position as they are brought together.-

The operation of a door embodying my invention may be described as follows: Let it be supposed that the doors 4: and 5 are standing in the open position, swung out from the jamb and supported upon the hinge 8. It will be noted how accessible the interior of the vault is, for there is no vestibule, properly so-called, in the construction. A grille 90, with a gate 91 may be provided, if desired, as shown in 6, although having no necessary connection with the invention herein claimed. In the normal condition, when the door is standing open, as described, the bolts 28 will be in their fully retracted'position, illustrated in full lines in Fig. 4, thus securely connecting the doors 4 and 5 to each other. In addition to the bolts 23, however, it -will be understood that the interconnecting bolts 50, being in their most extended position, as illustrated in Fig. 5, will also serve to hold the doors together, andthe bolt 71, engaging the notch 70, by reason of the freedom of the rod 80 to slide outwardly, as the doors move from the jamb 3, will preventrotation of the disk 54 to move the bolts 50. It will thus be evident that the'doors t and 5 can not be separated from each other accidentally or by reason of thoughtless operation of the bolts 23 while the doors are standing open. In fact the doors 4 and 5 can not be separated from each other, when both are out of the jamb 3, except by rotating the hand wheel 35 to throw the bolts 23 to the neutral or fully extended position, opening the aperture 8d by proper manipulation of the combination lockSG, placing a key or crank upon the squared end 68 of the spindle 67 and then, while forcibly pressing inwardly on the outer end of the rod 80, rotating said spindle 67 to actuate the disk 54. The doors 4 and 5, having been freed from each other, in so far as the bolts 23 are concerned, will be fully freed from each other upon the retraction of the interconnecting bolts 50, as just described. Such freeing of the inner from the outer door should, of course, only be undertaken with proper precautions for the I support of the inner door when it is freed from the outer door, and such separation is by no means a part of the normal operation of the device. For this reason the operation of complete separation of the two doors is somewhat intricate, as above described, and can only be accomplished by a properly skilled and competent operator.

The two doors being connected by means of both the bolts 23 and bolts 50, in the nor mal condition, when the doors are both standing open supported by the hinge 8, the

pointer 36 indicates the fully extended po-- sition of the bolts 23, as it does in Fig. 1.

The bolts 23 having thus been fullyextended, it will be noted that they no longer serve to connect the inner and outer doors to each other, but form a bolt work holding the outer door only, as the bolts 47 hold the inner door, the only connection between in-',

nor and outer doors, when bothare locked in the jamb by the locking bolts, being the, interconnecting bolts 50, of which it will be noted there are only a small number, such as four. The bolts 23 having been fully eX- tended the combination locksf12 and 13:

should, of course, be locked in the usual way so as to require proper manipulationto accomplish the unlocking of the door. After the doors 4 and 5 have been locked, as 'described,.they should be entirely freed from each other with respect to the bolts'50, it being only necessary to actuatethe combina tion lock 86 to move the door and thus make the spindle 67 accessible for a'key or crank, for it will be remembered that the; rod 80, by the very operationof closing the doors into the jamb 3, will be actuated to withdraw the bolt 71 from the notch 7 0 and permit the disk 54; to be rotated. If, how-I ever, the bolts 50 remain undisturbed, the

small size of said bolts, and their relatively,

insecure connection tothe doors, make the separation of the doors from each other a1 much more easily, accomplished task than the separation of either of the doors from? the jamb. These remarkshave particular bearing upon the matter of the efi'ect of explosives or wedging upon the doors, as it will be readily understood by those skilled in the art, that should the outer door be blown or forced by wedges from the jamb it will separate from the inner door, by

reason of the relatively frail interconnection of the bolts 50 rather than afiect the position of the inner door, or any partthereof,

which is firmly locked to the jamb by the.

heavy and strong bolts 47. In this connection especial attention is called to the'oon siderable space 43 between the inner and outer doors. This space isof sufficient capacity with relation to the size and strength of p the doors and bolt work toprovide an eX- plosion chamber which will permit the ex plosion of an ordinary charge without seri-- ouslyaifecting the door. I Should an usually heavy charge be fired, however, the inner door 5 will not-be injured or sprung from position, because theforce of the explosion on said door would be inward in the direc-.

tion to drive itmore firmly into its seat'in the jamb, and the only effect of such explosion, were it possible to provide a sufliciently heavy charge, would be to blow the front door out of the jamb. This having been accomplished, the second'or inner door would present as great, if not greater, difficulties in this direction as the outer door.

Returningto the normal operation of the device, if it is desired to open the outer door,

separating the same from the'inner door, and leaving the inner door in place w1th1n the jamb, one of the combination locks -12 and l3'should be actuated so as towithdraw the bar 16 from therecess at 37 in the ring 24:. oThe hand wheel 35 should then be rotated until the pointer indicates a position intermediate the fully retracted and fully extended positions, thus annularly moving 1 to the neutral or intermediate position, illusthe ring-24sufliciently to retract the bolts 23 trated by the dotted lines 40 in Fig. 4. In

this position the said bolts 23 do not'engage either the jamb 3 nor the flange 42. The combination lock 86 should then be manipulated to movethe door 85 into open position, whereupon'the spindle 67 may be ro-" tated, as hereinbefore described, to retract the bolts50, thus drawing their outer ends out of the recesses 63 in the-flange 1-20 and d-isconnectingthe outer from the inner door.

As thebolts 50 are thus retracted the bolts '58 will becorrespondingly extended so as to enterrecesses in the jamb 3 and hold the inner door5 in position in the jamb' while the outer door is free to swing outwardly,

alone, upon the hinge '8. Such intentional Y separation of the doors maybe accomplished for the purpose of inspectionandcleaning of the bolt work ahdthe like, andchang ing the combinationof the locks 12 and 13. When such inspection, cleaning or changthen be swung into positionto again engage the inner door and the spindle 67 may then be rotated to retract the bolts '58 ;while simultaneously extending the 'bolts 50', thus unlocking the inner door from' the jamb, in

so'far as the bolts 58 "are concerned, and connecting the doors 4 and 5 by means of p the bolts 50. If the automatic device has at thistime been tripped by the time lock so as to retract the bolts 47 both ofthe doorsmay ing has been finishedthe outer door may then be swung open upon the hinge 8, it

being preferable, however, to fully retract the "bolts 23 beforedoing so, so as, to add's'aid bolts 23 to the bolts 50 in the connection of the inner and outer doors to each other:

Although the drawings and above specification disclose the best mode in which I have contemplated embodying my invention, I' desire to be not limited to the details of such disclosure, for, in the further practical application of my invention, many changes in form and construction may be made, as circumstances require or experience suggests, without departing from the spirit of the invention, within the scope of the appended claims.

1. For vaults and the like, an inner door and an outer door, independent locking means for each of said doors for independently locking the same to the amb, the locking means of the outer door adapted to connect the inner door and outer door together, when said locking means is in the fully retracted position, and to permit separation of said doors when said locking means is in the partially retracted position, and said inner door provided with safety locking means adapted to assume two alternative positions, one 1n which said means connects the inner and outer doors together without locking said inner door to the amb and the other inwhich said means locks said inner door to the jamb, while permitting said doors to be separated from each other.

'2. For vaults and the like, an inner door and an outer door, independent locking means for each of said doors for independently locking the same to the amb, the lock- [which said means locks said inner door to doors, the inner door, on its outer face, provided with an outwardly projecting flange, and the outer door provided, on its inner face, with an inwardly-projecting flange,

said flanges adapted to assume telescopic relation when said doors are in the closed position in the Ti amb, said flanges provided with registering bolt apertures, locking bolts slidably mounted within said apertures and adapted to assume an extended locked positlon wherein said bolts engage said jamb,

but do -not engage the flange of the inner door, an intermediate position, in which said bolts do not engage either said j amb or said flange of said inner door and a .fully re-.

-said doors provided with locking tracted position in which they extend into the apertures of the flange on the inner door, but do not engage said jamb, and means for actuating said bolts.

4. For vaults and the like, inner and outer doors, each door provided with independent locking means for locking the same to the jamb, said doors adapted to be removed from said amb in connected condition, said outer door adapted to be removed from said jamb independent of said inner door, said inner door provided with safety bolt-work adapted to be actuated to assume two alternative positions, one in which said inner door is freed from said outer doors, but locked to the jamb, and the other, in which said inner door is freed from said jamb, but connected to said outer door and safety bolt-actuating means on said outer door adapted to move into and out of operative connection with said safety bolt mechanism on the inner door, as said outer door is moved respectively toward and from said inner door.

5. For vaults and the like, inner and outer doors provided with concentric telescoping flanges on their adjacent faces, and one of bolts adapted to assume three several positions, the first in which said bolts engage only the flanges of, one door; the second in which said bolts engage'the flanges of said door and the janib and the third in which said bolts engage the fiangesof both doors.

6. For vaults and the like, an inner door and an outer door each provided with independent bolt work for locking the doors to the jamb, a hinge supporting said outer door, the bolt work of said outer door adapted to connect the inner door to the outer door when the bolts of said bolt work are fully retracted, and adapted to free said outer door from the jamb without looking said doors together when said bolts are partially retracted, and one of said doors pro vided with interconnecting bolts and the inner door provided with safety bolts, said interconnecting bolts adapted to connect and disconnect said doors, said safety bolts adapted to connect and disconnect said inner door with relation to the jamb and means for actuating said interconnecting bolts and safety bolts simultaneously in opposite directions whereby to connect said doors together by the interconnecting bolts when the safety bolts do not engage said jamb and to disconnect the doors from each other when said safety bolts do engage the jamb, and said doors may be opened together upon said hinge while in connected condition or separated from each other while said inner door is locked to the jamb by said safety bolts.

- 7. For vaults and the like, the combination of inner and outer doors provided with telescoping flanges on their adjacent faces, one of said doors provided with automatic bolt-work controlled by a time lock, the other door provided with bolt work checked by a combination lock, the bolt work checked by the combination lock adapted, when fully retracted, to connect said telescoping flanges to each other, and the inner door provided with interconnecting bolts and safety bolts, means common to said interconnecting bolts and safety bolts whereby to extend said safety bolts when said interconnecting bolts are retracted and to retract said safety bolts when said interconnecting bolts are extended, means on said outer door for actuating said bolt actuating means and adapted to move into and out of engagement therewith as said outer door is moved toward or away from said inner door and said interconnecting bolts when extended adapted to connect the flanges of said inner and outer doors and said safety bolts, when extended, adapted to retain said inner door in the jamb.

8. In a device of the character described, in combination with the jamb and outer and inner doors adapted for connection and disconnection with reference to said jamb and with reference to each other, safety boltwork on said inner door comprising interconnecting bolts, safety bolts and a common bolt actuating mechanism adapted, when actuated, to move said safety bolts into extended position to engage said jamb and said interconnecting bolts into retracted position to disengage said outer door or, alternatively, to move said interconnecting bolts into extended position to engage said outer door and said safety bolts into retracted position to disengage said jamb, substantially as and for the purpose specified.

9. In a device of the character described,

in combination with the j amb and inner and outer doors provided With telescoping flanges on their adjacent faces,asafety boltwork connected to said inner door on the outer face thereof and comprising interconnecting bolts slidably connected to the flange of said inner door and adapted, when extended, to engage the flange of said outer door to connect said doors together, safety bolts slidably connected to said inner door and adapted, when extended, to engage said jamb to hold said inner door in place therein, a disk rotatably connected to said inner door, connecting rods connecting said interconnecting bolts and safety bolts to said disk, and adapted, when said disk is rotated, to extend said safety bolts and retract said interconnecting bolts or to extend said interconnecting bolts and retract said safety bolts, in accordance with the direction of rotation of said disk, disk rotating means connected to said outer door and adapted to move into and out of engagement with said disk as said outer door is moved toward or from said inner door, respectively, and a spring actuated disk locking bolt mounted on said inner door and adapted to engage said disk to prevent rotation thereof, when said inner door is out of the jainb, and to free said disk for rotation, when said door is in the jamb.

10. For vaults and the like, an inner door and an outer door, said outer door mounted upon a hinge adapted to support both doors, each door provided with independent boltwork for locking the same to the jamb, the bolt-work of the outer. door adapted to assume three positions, a first position in which said bolt-work locks said outer door to the jamb, a second position in which said outer door is freed from said jamb and from said inner door, and a third position in which said outer door is connected to said inner door, safety bolt-work on said inner door adapted to connect said doors together and, alternatively, to connect said inner door to the jamb and means accessible from the, front of said outer door and adapted to actuate said safety bolt-work.

In testimony that I claim the above, I have hereunto subscribed my name in the presence of two witnesses.

HARRY F. BALOUN.

Witnesses VILLIAM H. MILLER, R0131. T. MEYER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner, of Patents,

Washington, I). 0. 

